Rage is becoming a real problem

I've always had a temper but it's gotten worse since my daughter was born 18 months ago. Small things set me off - traffic, things not going according to plan, even the way someone talks to me. It's affecting my marriage and I know my kid is picking up on it. I don't hit or anything but the yelling and slamming stuff is bad enough. Has anyone dealt with anger management and actually found something that works? Thinking about looking into that specifically instead of general therapy.